/*
 * Copyright (c) 2020, yifengling0. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. No personal names or organizations' names associated with the
 *    Atomthreads project may be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */


#ifndef _DEVICEH_
#define _DEVICEH_

#include "atom.h"
#include <stddef.h>
#include "queue.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef struct DevNode DevNode;

struct DevNode {
    SLIST_ENTRY(DevNode) node;
};

typedef struct DeviceProperty DeviceProperty;
#define DEVICE_PROPERTY_END  { NULL, NULL, NULL }

typedef struct _deviceDesc{
    const char *name;
    const char* info;
    int drv_cnt;
    const char *drv_list[DEVICE_DRV_NAME_LEN];
    const DeviceProperty* property_list;
}DeviceDesc;

typedef struct Device_t Device_t;
struct DeviceProperty {
    const char* name;
    size_t (*readp)(Device_t* dev, void* buf, size_t size);
    size_t (*writep)(Device_t* dev, void* buf, size_t size);
};

struct Device_t {
    SLIST_ENTRY(DevNode) node;
    const DeviceDesc *desc;
    void (*suspend)(Device_t* dev);
    void (*resume)(Device_t* dev);
};

void DeviceInit(void);
Device_t *DeviceFind(const char *name);
int DeviceInstall(Device_t* device, const DeviceDesc* desc);
size_t DeviceSetProperty(Device_t *device, const char *name, void* buf, size_t size);
size_t DeviceGetProperty(Device_t *device, const char *name, void* buf, size_t size);

#ifdef __cplusplus
}
#endif

#endif